CBSE Science Fair Exhibition Project, “Recycling of sewage water with generation of electricity” Theme “Natural Resource & their Conservation” for Class 9, Class 10 and 12

Project Name : Recycling of sewage water with generation of electricity.

Theme Name : Natural Resource & their Conservation

Objective/Aim: Recycling of sewage water with generation of Electricity

Scientific Principle Involved:

a) Conversion of mechanical energy into electrical energy

b) Purification of water by evaporation

Material Used: Wooden board, Iron sheet, Dynamo, Pulley, coal, wooden blocks

Working Investigation and Findings: The running sewage water has kinetic energy which can be utilised to generate electricity by passing it through the water whell.

The sewage water gets stored in a tank where it can be heated with the help of fuels (fossil fuel or bio gas). The heating of water evaporates the water which creates steam. And this steam at high pressure can be further utilised again to generate electricity.

Formula used to calculate the amount of electricity generation in the process is given by:

Gallons per minute x.000253 x height in feet x efficiency = horsepower

So in our model we have taken 15 gallons of water and the height of the water wheel. In Varanasi 400mld of water flows daily into the river Ganga that is equivalent to 69444 Gallon per minute. So by using the above formula we can generate the minimum of 26kW of electricity in Varanasi (by taking the minimum consideration) and the maximum electricity generation through the process can be upto 40kW.

Utility and Further Scope:

a) Can be used to treat sewage water

b) Electricity generation to a very large scale

Name of the School: Little Flower Hosue, Varanasi.

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